无需安装任何内容即可将HTML转换为图像

Question

I want to create a functionality that converts HTML source code of some websites into jpg/png images. I also have to do that on external server - which means I don't know if it has all necessary libraries, and I don't wanna install there too much things, the less the better.

I have found two options:

- wkhtmltoimage
- cutycapt

But they both require dependencies to install, not to mention emulating server, which sucks.

Is there a way to do this without any external libraries? Thanks!

Answer 1

You can use this Java Library, Html2Image.This simple Java library converts plain HTML markup to image and provides client-side image-map using HTML element and also supports different image formats such as GIF, PNG or JPEG image.

This library has very handy, simple and sober API's.

Common usage is this:

HtmlImageGenerator imageGenerator = new HtmlImageGenerator();

imageGenerator.loadHtml("<b>Hello World!</b> Please goto <a title=\"Goto Google\" href=\"http://www.google.com\">Google</a>.");
// OR you can fetch HTML from URL
imageGenerator.loadUrl("http://www.example.com/xyz.html");

imageGenerator.saveAsImage("hello-world.png");
imageGenerator.saveAsHtmlWithMap("hello-world.html", "hello-world.png");

Which will generate hello-world.png image of the HTML and hello-world.html file containing client-side image-map .

There are several others API's of this library which you can explore as per your needs.